Rocks and Minerals Question Marathon

eox · Post by **eox** » Sat Nov 24, 2012 9:47 am

sorry for not posting a new question earlier guys, was studying for school tryouts and didn't have time xD
glad to see you progressed without me

10manwire · Post by **10manwire** » Sun Nov 25, 2012 8:13 am

1. Identify 2. This rock is the plutonic equivalent of what? (Click to Show Hidden Text)

[img]http://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/images/gabbro1.jpg[/img]

hotchocolate123 · Post by **hotchocolate123** » Sun Nov 25, 2012 8:53 am

1) Gabbro 2)basalt

10manwire · Post by **10manwire** » Sun Nov 25, 2012 9:42 am

hotchocolate123 · Post by **hotchocolate123** » Sun Nov 25, 2012 9:58 am

Identify, and is this specimen hazardous? If so, why? (Click to Show Hidden Text)

[img]http://mesotheliomadoc.files.wordpress.com/2011/08/tremolite.png[/img]

10manwire · Post by **10manwire** » Sun Nov 25, 2012 10:04 am

Haven't seen a specimen like this in a while... (Click to Show Hidden Text)

Tremolite, yes, fibrous tremolite is one of the recognized forms of asbestos, which is toxic and can cause lung cancer, among other diseases

hotchocolate123 · Post by **hotchocolate123** » Sun Nov 25, 2012 11:00 am

Yup! Most of the tremolite that I find are the variations of hexagonite....

10manwire · Post by **10manwire** » Sun Nov 25, 2012 11:04 am

1. Identify 2. Protolith? (Click to Show Hidden Text)

[img]http://www.nwnature.net/cam/science/rocks/web_rocks/phyllite.jpg[/img]

hotchocolate123 · Post by **hotchocolate123** » Sun Nov 25, 2012 11:18 am

Hmmm... :? (Click to Show Hidden Text)

Phyllite? and parent rock would be shale or slate

10manwire · Post by **10manwire** » Sun Nov 25, 2012 11:24 am

Correct, although it may just be slate - I'm not positive.

Scioly.org